T&T: Window Glass Adhesive

[Rock Bradford]

we now use a basf product above the waterline and it is especially
good on windows, made particularly to put windows in high-rise
buildings, never gets hard, hasn't streaked on our boat in 3 years.
it's called np-1 and you can get it at glass stores;  much cheaper
than the competition @ +/- $6/tube.  no connection, just a happy
customer.

rock bradford
44' Cygnus "Magpie"
luperon, dominican rep.

On 4/1/09, Keith <keith at anastasia3.com> wrote:
> Sika has a good guide for direct glazing at:
> http://www.sikaindustry.com/marine_direct_glazing_guidelines_aug_2004.pdf
> This includes installation guidelines and a chart to help you pick which of
> their products should be used. They can be a bit hard to find. If you can't
> find them locally, check out www.jamestowndistributors.com.
>
> Be sure to use setting blocks on the bottom. Strips of lead work best and
> can be found at your local glass shop. If you can't find those, flexible
> plastic, rubber, or the like can be used. Just don't set the edge of the
> glass down on wood, metal or fiberglass.
>
>
>
> Keith
> _____
>
> -----Original Message-----
>
> Subject: T&T: Window Glass Adhesive
>
> Our Nova Scotia 47 has a black adhesive/sealant used to secure the vessel's
> window glass onto the fiberglass superstructure.    It seems the original
> adhesive/sealant is breaking down, possibly from UV attack.   The sealant
> streaks black marks down the vessel side when washed, one small window
> virtually fell out and some other windows appear they are headed the same
> way. We believe the sealant used was 3M Black 5200.
>
> We asked 3M which of their adhesives they would recommend for such an
> application, they told us that window glass should not be glued in place but
> should be held mechanically. 3M recommended their products should be used
> for sealing only. We like the way our windows are attached with no window
> frames or mechanical attachments to corrode or tarnish, we wonder if 3M are
> just being conservative, However clearly the correct use of the right
> adhesive sealant (and primer) is important or a dangerous situation might
> develop in rough water conditions.
>
>
>
> Does anyone have particular experience with securing glass windows onto
> fiberglass please?
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